Heavy Hex Head Bolt
Heavy hex head bolt are a special type of hex head bolts designed for application scenarios that are subjected to heavy loads and stresses. These bolts typically have high strength and durability to meet the fixing needs of heavy machinery and equipment. Heavy hex head bolt can be made of stainless steel, carbon steel, or other high-strength materials to ensure performance and safety under extreme conditions. Additionally, the size and dimensions of heavy duty hex head bolts can be customized for specific applications to accommodate different installation environments and load requirements.
- Product Introduction
Why Choose Us
Diverse Applications
Products are used in various industries, including: Aerospace, petrochemical refining, oil and gas, chemical processing, power generation, pharmaceuticals, food and beverages, rail transit, ships, medical industry, semiconductors and water treatment products in special fields or with special usage environment requirements.
Rich Product Range
We specialize in fasteners and custom parts in nickel-based alloys, titanium, duplex steels, 6% molybdenum and specialty stainless steels. The company's main products: Bolts, nuts, screws, washers, studs, sleeve products, screws, U-bolts and flanges, and provides customers with non-calibrated parts processing services.
Fast Delivery
With millions of dollars of inventory in our product warehouse, we have enough inventory for each product, which allows us to quickly select, pack and ship products to fulfill your order efficiently and timely. Complete production lines also enable rapid production and delivery of customized products.
Strict Management
We strictly supervise each production link and strictly follow the company's production system and industry standards. Our products comply with applicable ASTM, ANSI, ASME, SAE, API, NAS, AN, MS and other standards to provide quality assurance for our products.
Heavy hex head bolt are a special type of hex head bolts designed for application scenarios that are subjected to heavy loads and stresses. These bolts typically have high strength and durability to meet the fixing needs of heavy machinery and equipment. Heavy hex head bolt can be made of stainless steel, carbon steel, or other high-strength materials to ensure performance and safety under extreme conditions. Additionally, the size and dimensions of heavy duty hex head bolts can be customized for specific applications to accommodate different installation environments and load requirements.
Plug and bushing are manufactured by cold heading and hot forming technology, and the nominal diameter ranges from 1/8 "to 3"(M3 to M80). We provide plugs and bushings in USCS/ English and metric sizes.
We have advanced comprehensive capabilities, including engineering, research and development, prototype design, customized manufacturing, precision machining and testing. All our materials come from the most prestigious and demanding foundry in the world.
We keep millions of dollars of fasteners in the product warehouse, which enables us to quickly select, package and speed up your plug and bushing orders. We are proud to serve distributors, EPC, OEM and MRO customers all over the world.
Our fasteners meet the applicable ASTM, ANSI, ASME, SAE, API, NAS, AN, MS, NACE, ISO, DIN and KS standards. Our markets include semiconductor equipment, aerospace, medical instruments, ships, oil and gas, pharmaceuticals, petrochemicals and oil refining.
Hex bolts, also known as hexagonal head bolts, are threaded machine bolts used with a nut or in a tapped hole. As the name suggests, hex head bolts are hexagonal heads (6 sides) made from grade 2 galvanized steel, 316/304 stainless steel, and grade 5 zinc plated steel. Hex head bolts are designed to secure objects within or against other objects for a non-loosening hold. Applications for a hex bolt include fastening steel to steel, wood to wood, and other materials found on construction for projects such as highway structures, bridges, and buildings. The Hex bolts allow for greater torque than traditional circular screws and tend to spin as you tighten and loosen them, making the need to hold with a wrench or socket. Hex bolts are commonly installed and removed with socket wrenches.
Hex cap screw bolt is manufactured by the cold heading and hot forming technologies in nominal diameters ranging from 1/8"- 3" (M3 – M80). We offer fasteners in both USCS/Imperial and metric sizes.
Heavy hex head bolt is manufactured by the cold heading and hot forming technologies in nominal diameters ranging from 1/8"- 3" (M3 – M80). We offer fasteners in both USCS/Imperial and metric sizes.
Advantages of Heavy Hex Head Bolt
Convenience And Universality
Hexagon head bolts are designed so that they are easy to install and remove using common tools. This design makes hexagon head bolts very easy to work with in a variety of environments and allows people to install them manually even without the proper tools. Although the use of appropriate tools is recommended for best results.
Durable, Resilient Materials
Hexagon head bolts are typically made of stainless steel, carbon steel and non-ferrous metals, which provide excellent durability in complex environments, especially for connections that need to be used outdoors, such as building and construction, where the corrosion resistance of these bolts can extend the service life and reduce maintenance costs.
Fast And Efficient Assembly
The hexagonal shape of hexagonal head bolts allows them to be installed quickly because the shape is easy to grip and manipulate with hand tools, which reduces the turning over of bolts during tightening or loosening and thus improves installation efficiency.
Stability And Reduced Turnover
The strong connection and smooth edges of hex head bolts are not only easy to install, but also provide a tamper-resistant design, which maintains the stability of the connection during sustained vibration or prolonged use.
Compatibility And Standardization
Hexagon head bolts are widely used in a variety of specification components due to their simple and efficient design. This compatibility not only improves cost efficiency but also ensures real value, and their widespread use promotes standardization on a global scale.
Enhanced Torque Usage
The flat side of the hex head design provides a larger area for force to act on, which helps to minimize slippage or separation of the bolt or nut during tightening, which is especially important in applications requiring high torque, such as in automotive and mechanical assemblies.
Select The Appropriate Bolts And Installation Tools
Select the appropriate heavy hexagon head bolts according to the components to be installed and the working environment. Ensure that the size and specification of the bolts meet the requirements, and at the same time, prepare the required installation tools, such as wrenches, screwdrivers, etc.
Prepare The Mounting Surface
Make sure the mounting surface is clean, flat and free of oil or impurities to ensure that the bolts can be firmly fixed on the components.
Positioning And Pre-drilling
If bolts are to be installed in metal or other hard materials, it may be necessary to pre-drill holes in the installation location. The diameter and depth of the drilled holes should be slightly smaller than the diameter of the bolts to ensure that the bolts are tightly secured in the holes.
Installing Bolts
Insert the bolt into the pre-drilled hole and tighten the bolt with a wrench or other appropriate tool until the desired degree of tightness is achieved. For heavy bolts, it may be necessary to use more force to ensure that they are securely fastened.
Inspection And Adjustment
Upon completion of the installation, the bolts should be inspected to ensure that they are securely fastened with no looseness or deflection. If necessary, appropriate adjustments can be made to ensure that all bolts are evenly loaded to avoid localized overloading.
Caution
During installation, safety should be observed and operation under high pressure or high temperature should be avoided. In addition, the manufacturer's recommendations and safe operating procedures should be followed to ensure a safe and reliable installation process.
The main function of heavy hex head bolt is to provide a strong and stable connection, especially in heavy machinery and aerospace engineering components.
The design and material selection of heavy duty hex head bolts ensures their reliability and durability in complex and harsh environments. Often made of stainless steel, carbon steel or non-ferrous metals, these bolts are able to maintain their performance in fluctuating temperatures and harsh environmental conditions, providing outstanding durability. Additionally, the hexagonal shape of heavy-duty hex head bolts is not only easy to install, but also provides a stable connection that reduces the possibility of loosening or deflection that can occur during prolonged periods of constant vibration. The smooth edges of these fasteners and the flat sides of the hexagonal shape provide a larger area for force, minimizing the risk of arcing or separation during torquing, thus ensuring a stable and secure connection.
Heavy hex head bolt are widely used thanks to their compatibility and specification. They can be used in a wide range of specification components, providing cost-effective solutions and real value. In addition, these bolts are widely available globally, complete with specification, making them easy for users to obtain and install themselves, whether it's a professional installation or a DIY project.
Connection Method of Heavy Hexagon Head Bolts
High tenacity large hexagon head bolts for steel frame structure GB/T1228-1991: This is the standard about high tenacity large hexagon head bolts used in steel frame structure.
Steel frame structure with high toughness large hexagon head bolts, large hexagon nuts, sealing ring form standard and professional skills standard GB1231-1991: This standard covers the steel frame structure using high toughness large hexagon head bolts, large hexagon nuts and sealing ring form and professional skills requirements.
Steel frame structure with twisted shear type high toughness connecting vice form standard and professional skills standard GB3633-1983: This is about the steel frame structure with twisted shear type high toughness connecting vice form standard and professional skills requirements.
Steel frame structure with high toughness sealing ring GB/T1230-1991: This is about the steel frame structure using high toughness sealing ring standard.
Spherical net frame bolts ball joints with high strength bolts GB/T16939-1997: This is about the spherical net frame bolts ball joints used in high strength bolts of the standard.
Manufacturing Process of Heavy Hexagon Head Bolts
Material Selection
According to the strength level of the bolt to choose different materials, the market standardized parts are mainly carbon steel, stainless steel, copper three kinds of materials. Carbon steel is widely used because of its excellent workability and low cost. Stainless steel is suitable for specific environments due to its good heat and corrosion resistance. Copper is used for specialized applications because of its good electrical conductivity and corrosion resistance.
Spheroidizing (softening) Annealing
For hexagon bolts produced by the cold heading process, e.g. hexagon socket cylindrical head bolts, the original organization of the steel affects the formability of the cold heading process. Therefore, spheroidizing (softening) annealing is carried out on medium-carbon and medium-carbon alloy steels to obtain a uniform and detailed spheroidized pearlitic body to meet the actual production requirements.
Pre-treatment
Before the hot forging process, the material is finely selected, de-oxidized, hammered and other treatment processes are carried out to improve the deformation capacity and continuity of the material.
Heating Of Billet
Adopt resistance furnace to heat the billet uniformly, to ensure that the whole billet has good plasticity and toughness under the hot deformation state. Pay attention to maintain the uniformity of the temperature of each part of the billet to avoid temperature deviation affecting the mechanical properties of the forging.
Forging
Forging is carried out on a 200-ton frame hydraulic press, and the billet heated to a certain temperature is placed in the forging die for deformation. Adopt continuous mold for forging, according to the shape of hexagonal bolts, using multiple cooling process to reduce the temperature, prevent deformation, improve forging quality.
Inspection
Multiple inspections are carried out during the production process, including appearance inspection, hardness inspection, tensile test, etc. to ensure product quality.
Correct Selection Of Products
Before use, it should be confirmed that the mechanical properties of the product can meet the use requirements, such as the tensile strength of the hexagonal cup head screws and the guaranteed load of the nut. The length of the screw should be properly selected to ensure that the nut is exposed 1-2 tooth spacing after tightening.
Check The Condition Of The Threads
Before use, the threads should be checked for roughness and for iron filings or dirt between the threads, which often lead to locking. Therefore, it is very important to keep the threads clean and smooth.
Lubrication Treatment
Before use, you can do lubrication treatment to the fasteners, it is recommended to use butter, molybdenum disulfide, mica, graphite or talcum powder to do lubrication, and nowadays, it is common to use wax dipping treatment to do lubrication to prevent locking.
Appropriate Use Method
• The speed and force of screwing in should be appropriate, not too fast or too large. As far as possible to use torque wrenches or socket wrenches, avoid the use of activity wrenches or electric wrenches. Excessive speed may result in a rapid rise in temperature leading to locking.
• Direction of force applied, the nut must be screwed in perpendicular to the axis of the screw.
Use Of Washers
The use of washers is effective in preventing over-tightening of the locking problem.
Anti-loosening Treatment
In order to avoid loosening, you can take some anti-loosening treatment measures, such as adding a suitable spring washer in the middle of the hexagon socket screws and workpiece, or in the end of the hexagon socket screw threads to do drop-resistant point glue to increase the pressure and through the rebound force to increase the pressure and increase the effect of anti-loosening of hexagon socket screws The effect of anti-loosening of hexagonal screws can be increased.
Our Factory
Ningbo Decheng Industrial Equipment Co., Ltd. is a private company specializing in high performance high temperature, corrosion resistance, high strength and other special material fasteners, headquartered in Zhejiang Province, China.
Founded in July 2019, the company is located in Ningbo, Zhejiang Province, China, with a registered capital of 300,000 US dollars. It is a privately owned enterprise, specializing in providing fasteners and custom parts of nickel-based alloy, titanium, biphase steel, 6% molybdenum and special performance stainless steel. We provide small-batch and multi-variety business services. Bolts, nuts, screws, washers, studs, sleeve products, threaded rods and U-bolts and flanges.
FAQ
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